LOCATION
Province: Ha Tay
District: Ba Vi
Latitude (degrees and minutes): 21°10'N
Longitude (degrees and minutes): 105°20'E
Altitude (m above sea level): 70
Managing office/institution: Research Centre for Forest Tree Improvement
Owner: do
User(s): do
Distance to nearest office responsible for management of the trial (km): 60
Distance to nearest villages/towns (km): 25 km (Son Tay town)
Number of inhabitants in the nearest villages/towns: 30,000
Type of area (e.g. research station, managed forest, etc.): Research station
CLIMATE
Nearest weather station:
Name of the station: Ba Vi Experimental Station
Latitude (degrees and minutes): 21°10'N
Longitude (degrees and minutes): 105°20'E
Altitude (m a.s.l.): 70
Climatic data1 |
Jan. |
Feb. |
Mar. |
Apr. |
May |
June |
July |
Aug. |
Sep. |
Oct. |
Nov. |
Dec. |
Year |
Rainfall (mm) |
11.9 |
7.4 |
91.8 |
172.2 |
115.5 |
245.4 |
369.8 |
396.4 |
205.5 |
83.7 |
82.5 |
15.5 |
1797.6 |
Temp. mean (_C) |
16.3 |
16.9 |
19.4 |
23.3 |
27.1 |
28.5 |
28.3 |
27.5 |
26.3 |
24.1 |
20.9 |
17.2 |
23.0 |
Temp. mean max.2 (_C) |
26.2 |
28.7 |
33.0 |
31.8 |
40.8 |
40.2 |
36.8 |
37.6 |
33.7 |
34.0 |
31.0 |
27.3 |
33.4 |
Temp. mean min.3 (_C) |
7.6 |
9.6 |
9.5 |
12.8 |
12.9 |
23.0 |
20.9 |
22.0 |
17.7 |
11.2 |
9.5 |
5.3 |
13.5 |
Evapotranspiration4 (mm) |
1 Period of observations:.1993-97........(specify years) 2 Average of daily maximum temperatures
3 Average of daily minimum temperatures 4 Potential evapotranspiration (ETP) - Penman's formula
Rainy season:
Number/type of seasons: |
X |
one |
two |
even/irregular |
Period(s): April-September (specify months)
Length of rainy season:
No. of intermediate days: 90 (pre- and posthumid period of the growing season)
No. of wet days: 180 (growing season)
Number of dry months per year (< 50 mm rain/month): 3
Frost (number of days/year):
Prevailing winds (direction, period, speed):
TOPOGRAPHY (slope) of trial site
Flat/gentle (0-8%) |
X |
Intermediate (9-30%) |
Steep (>30%) |
GENERAL SOIL DESCRIPTION |
Soil texture |
Soil depth |
Soil drainage/ Waterlogging |
Gravel content, topsoil | ||||
1. Light/sandy |
1. Shallow (< 50 cm) |
X |
1. Well drained |
X |
1. None (< 15 %) |
||
2. Medium/loamy |
X |
2. Deep (50-100 cm) |
2. Seasonal |
2. Gravelly (15-35 %) |
X | ||
3. Heavy/clayey |
3. Very deep (> 100 cm) |
3. Permanent |
3. Stony (> 35 %) |
||||
Organic matter content |
Reaction (pH) |
Soil salinity |
Groundwater | ||||
1. Poor (< 2 % DM) |
X |
1. Acid (pH < 6.5) |
X |
1. None |
X |
1. Shallow (< 50 cm) |
X |
2. Medium (2-5 % DM) |
2. Neutral (6.5-7.5) |
2. Moderate |
2. Deep (50 - 150 cm) |
||||
3. Rich (> 5 %) |
3. Alkaline (pH> 7.5) |
3. High |
3. Very deep (>150 cm) |
||||
Specify soil unit, soil association and phases (subdivisions of soil units) according to the Soil map of the world (FAO-Unesco 1971-1979), if known: Ferrallitic soils developed on sandstone which is strongly degraded and
poor in nutrient.
VEGETATION
Natural (original) vegetation type: Rodomyrtus tomentosa, Melastoma caudida
Dominant natural (original) genera/species:
Land use history: Acacia and Eucalyptus plantations
Apparent major problems of site (pests, diseases, etc):.Some dried top shoots and insect attack on leaves
Economic data, viz. farm gate prices for fodder, fuel wood, small size timber,
extractives, and other minor produce:
TRIAL ESTABLISHMENT AND MANAGEMENT
Year and month of establishment: May 1996
Area (ha):
Initial spacing (m x m): 3 x 3 m
Soil preparation (time, method/intensity):
Planting method(age of seedlings, type):
Beating up (time, %):
Irrigation (time, amount):
Fertilization (time, type, amount):
Weeding (time, intensity):
Thinning (time, intensity):
Firelines:
TRIAL DESIGN
Statistical design: Randomized complete block design
No. of replications (blocks): 4 replications
No. of treatments (provenances): 21
Plot size (No. of trees in plot): 8
Demarcation (blocks, plots):
PROVENANCES TESTED
Marked provenances have been included in the trial:
Nazir Hat (01/BGD/Naz) |
Annur (06/IND/Ann) |
Vientiane (11/LAO/Vie) |
Tibbi Laran (16/PAK/Tib) |
Ban Bo (21/THA/Bo) |
Chapai Nawabganj (02/BGD/Cha) |
Ghaati Subramanya (07/IND/Gha) |
Yezin (12/MYA/Yez) |
Multan (17/PAK/Mul) |
Doi Tao (22/THA/Doi) |
Mandore (03/IND/Man) |
Sagar Chanatoria (08/IND/Sag) |
Myene (13/MYA/Mye) |
Kuliyapitiya (18/SRL/Kul) |
Sunyani (23/GHA/Sun) |
Chitradurga (04/IND/Chi) |
Balharshah (09/IND/Bal) |
Lamahi (14/NEP/Lam) |
Tung Luang (19/THA/Thu) |
Bandia (24/SEN/Ban) |
Allahabad (05/IND/All) |
Ramannaguda (10/IND/Ram) |
Geta (15/NEP/Get) |
Ban Nong Rong 1 (20/THA/Non) |
Chamwino (25/TAN/Cha) |
Names of any local provenances included in the trial:
PROTECTION STATUS:
Status (describe any disturbances/damages): All provenances suffered from dry-back of terminal shoot at different levels.
Guarding (permanent, regular, none):
Site map missing
Trial design map Ba Vi, Vietnam 1
Legend:
LOCATION
Province: Binh Thuan
District:
Latitude (degrees and minutes):
Longitude (degrees and minutes):
Altitude (m above sea level):
Managing office/institution: Forest Research Institute
Owner:
User(s):
Distance to nearest office responsible for management of the trial (km):
Distance to nearest villages/towns (km):
Number of inhabitants in the nearest villages/towns:
Type of area (e.g. research station, managed forest, etc.):
CLIMATE
Nearest weather station:
Name of the station:
Latitude (degrees and minutes):
Longitude (degrees and minutes):
Altitude (m a.s.l.):
Climatic data1 |
Jan. |
Feb. |
Mar. |
Apr. |
May |
June |
July |
Aug. |
Sep. |
Oct. |
Nov. |
Dec. |
Year |
Rainfall (mm) |
|||||||||||||
Temp. mean (_C) |
|||||||||||||
Temp. mean max.2 (_C) |
|||||||||||||
Temp. mean min.3 (_C) |
|||||||||||||
Evapotranspiration4 (mm) |
1 Period of observations:.........(specify years) 2 Average of daily maximum temperatures
3 Average of daily minimum temperatures 4 Potential evapotranspiration (ETP) - Penman's formula
Rainy season:
Number/type of seasons: |
one |
two |
even/irregular |
Period(s): (specify months)
Length of rainy season:
No. of intermediate days: (pre- and posthumid period of the growing season)
No. of wet days: (growing season)
Number of dry months per year (< 50 mm rain/month):
Frost (number of days/year):
Prevailing winds (direction, period, speed):
TOPOGRAPHY (slope) of trial site
Flat/gentle (0-8%) |
Intermediate (9-30%) |
Steep (>30%) |
GENERAL SOIL DESCRIPTION |
Soil texture |
Soil depth |
Soil drainage/ Waterlogging |
Gravel content, topsoil | ||||
1. Light/sandy |
1. Shallow (< 50 cm) |
1. Well drained |
1. None (< 15 %) |
||||
2. Medium/loamy |
2. Deep (50-100 cm) |
2. Seasonal |
2. Gravelly (15-35 %) |
||||
3. Heavy/clayey |
3. Very deep (> 100 cm) |
3. Permanent |
3. Stony (> 35 %) |
||||
Organic matter content |
Reaction (pH) |
Soil salinity |
Groundwater | ||||
1. Poor (< 2 % DM) |
1. Acid (pH < 6.5) |
1. None |
1. Shallow (< 50 cm) |
||||
2. Medium (2-5 % DM) |
2. Neutral (6.5-7.5) |
2. Moderate |
2. Deep (50 - 150 cm) |
||||
3. Rich (> 5 %) |
3. Alkaline (pH> 7.5) |
3. High |
3. Very deep (>150 cm) |
||||
Specify soil unit, soil association and phases (subdivisions of soil units) according to the Soil map of the world (FAO-Unesco 1971-1979), if known:
VEGETATION
Natural (original) vegetation type:
Dominant natural (original) genera/species:
Land use history:
Apparent major problems of site (pests, diseases, etc):.
Economic data, viz. farm gate prices for fodder, fuel wood, small size timber,
extractives, and other minor produce:
TRIAL ESTABLISHMENT AND MANAGEMENT
Year and month of establishment: June 1996
Area (ha):
Initial spacing (m x m):
Soil preparation (time, method/intensity):
Planting method(age of seedlings, type):
Beating up (time, %):
Irrigation (time, amount):
Fertilization (time, type, amount):
Weeding (time, intensity):
Thinning (time, intensity):
Firelines:
TRIAL DESIGN
Statistical design: Randomized complete block design
No. of replications (blocks): 1 block only
No. of treatments (provenances): 7
Plot size (No. of trees in plot):
Demarcation (blocks, plots):
PROVENANCES TESTED
Marked provenances have been included in the trial:
Nazir Hat (01/BGD/Naz) |
Annur (06/IND/Ann) |
Vientiane (11/LAO/Vie) |
Tibbi Laran (16/PAK/Tib) |
Ban Bo (21/THA/Bo) |
Chapai Nawabganj (02/BGD/Cha) |
Ghaati Subramanya (07/IND/Gha) |
Yezin (12/MYA/Yez) |
Multan (17/PAK/Mul) |
Doi Tao (22/THA/Doi) |
Mandore (03/IND/Man) |
Sagar Chanatoria (08/IND/Sag) |
Myene (13/MYA/Mye) |
Kuliyapitiya (18/SRL/Kul) |
Sunyani (23/GHA/Sun) |
Chitradurga (04/IND/Chi) |
Balharshah (09/IND/Bal) |
Lamahi (14/NEP/Lam) |
Tung Luang (19/THA/Thu) |
Bandia (24/SEN/Ban) |
Allahabad (05/IND/All) |
Ramannaguda (10/IND/Ram) |
Geta (15/NEP/Get) |
Ban Nong Rong 1 (20/THA/Non) |
Chamwino (25/TAN/Cha) |
Names of any local provenances included in the trial:
PROTECTION STATUS:
Status (describe any disturbances/damages):
Guarding (permanent, regular, none):
Site map missing
Trial design map missing
